Answer:
All of the following are examples of the evidence that supports the endosymbiotic theory EXCEPT for option C. Mitochondria and chloroplasts have linear chromosomes.
Explanation:
The endosymbiotic theory essentially states that some organules of the eukaryotic cells, such as mitochondria and chloroplasts, were once free-living bacteria. Probably, these organisms must have been phagocytosed, but not digested by another cell. On the contrary, these bacteria were able to adapt to their host so that the two cells established a dependent relationship with each other.
Due to its similarities to other free-living bacteria, it is speculated that chloroplasts must derive from cyanobacteria and that mitochondria must derive from rickettsias.
This theory is supported by a few characteristics of the chloroplasts and mitochondria that suggest they were once a free cell. For example,